It found that a series of failures such as not treating her in a timely manner, mismanagement of her care and monitoring, plus an unacceptable number of cancelled visits by staff all significantly contributed to her deterioration.

Ms Reed was waiting in prison for nine weeks for an assessment.

‘No food or water’

Her mother said: “It needs to stop, it needs to be investigated. We need to have things put in place that the mental health are dealt with in medical places. There’s no excuse and I want this to change, that no other family is torn apart or devastated.”

Image caption Marilyn Reed wants all mentally ill people to be assessed in hospitals, not prisons

“If they’d have said a secure unit, hospital, whatever, I’d have said fair enough. But prison? Remember she hadn’t been found guilty of anything, she’d been accused of a crime, she hadn’t been sentenced, yet she was placed in Holloway,” she added.

She said the inquest was painful for her and the family.

“The revelations such as her not being allowed to have baths or showers or being able to have food or water because they felt she was in such a psychotic state that she couldn’t be approached.

We thought that if she’d been a dog or a cat, kept under those conditions, someone would have been charged for animal cruelty.”

Image copyrightGetty ImagesImage caption Holloway prison closed last May after being described as “inadequate and antiquated”

She said her daughter had a history of mental health problems, which stemmed from her not recovering from the death of her baby daughter in 2003.

Last year 22 women died in prison. Holloway, which was western Europe’s biggest female-only prison, was closed last May after it was branded inadequate by inspectors.

In a statement, the government said: “We take the mental health of prisoners extremely seriously and are increasing the support available to vulnerable offenders.

“We are putting more funding into prison safety and have launched a suicide and self-harm reduction project to address the increase in self-inflicted deaths and self-harm in our prisons.”